WO2023047504A1 - Terminal, système de communication sans fil et procédé de communication sans fil - Google Patents

Terminal, système de communication sans fil et procédé de communication sans fil Download PDF

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Publication number
WO2023047504A1
WO2023047504A1 PCT/JP2021/034908 JP2021034908W WO2023047504A1 WO 2023047504 A1 WO2023047504 A1 WO 2023047504A1 JP 2021034908 W JP2021034908 W JP 2021034908W WO 2023047504 A1 WO2023047504 A1 WO 2023047504A1
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Prior art keywords
slice
information
network
random access
access procedure
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PCT/JP2021/034908
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English (en)
Japanese (ja)
Inventor
天楊 閔
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株式会社Ｎｔｔドコモ
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Priority to PCT/JP2021/034908 priority Critical patent/WO2023047504A1/fr
Publication of WO2023047504A1 publication Critical patent/WO2023047504A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/18—Management of setup rejection or failure

Definitions

  • the present disclosure relates to a terminal, a wireless communication system, and a wireless communication method that support slices in which a network is divided into specific units.
  • the 3rd Generation Partnership Project (3GPP) has specified Long Term Evolution (LTE) and 5th generation mobile communication system (also called 5G, New Radio (NR) or Next Generation (NG)), and Beyond 5G, 5G Evolution Alternatively, the next-generation specifications called 6G are also being developed.
  • LTE Long Term Evolution
  • NR New Radio
  • NG Next Generation
  • 6G next-generation specifications
  • the terminal (User Equipment, UE) has the ANR (Automatic Neighbor Relation) function, and the information of the neighboring cells of the UE, specifically, the NRT (Neighbor Relation Table) is automatically can be generated and updated dynamically. This makes it possible to achieve proper handover of the UE.
  • ANR Automatic Neighbor Relation
  • NRT Neighbor Relation Table
  • Non-Patent Document 1 an architecture (RAN Slicing) that divides the radio access network (RAN) into slices for each service such as a use case or business model is under consideration.
  • RAN Slicing slice-aware cell reselection and slice-specific random access channel (RACH) are being considered.
  • RACH slice-specific random access channel
  • the following disclosure is made in view of this situation, and aims to provide a terminal, a wireless communication system, and a wireless communication method that can appropriately share slice information regarding RAN Slicing.
  • control unit 240 that controls the association of neighboring cells
  • transmission unit (slice A terminal (UE 200) including a related information processing unit 230).
  • One aspect of the present disclosure is a wireless communication system including a terminal and a wireless base station, the terminal comprising: a controller for controlling association of neighboring cells; and a transmitter for sending neighboring cell information including information on slices into which the network is divided into specific units to the network, wherein the radio base station receives the neighboring cell information.
  • a wireless communication system including a receiving unit (ANR function unit 120) that receives the ANR function unit 120.
  • a terminal controls neighboring cell association, and the terminal transmits neighboring cell information including information on slices in which the network is divided into specific units to the network; said network receiving said neighboring cell information.
  • control unit 240 that selects a cell that supports or does not support a slice divided by a specific unit of the network, and the slice requested in the selected cell is not supported.
  • the terminal (UE 200) includes a transmission unit (slice-related information processing unit 230) that transmits a report including slice-related information to the network.
  • One aspect of the present disclosure is a wireless communication system including a terminal and a wireless base station, wherein the terminal selects a cell that supports or does not support a slice divided by a specific unit of the network. and a transmitting unit for transmitting a report containing relevant information of the slice to the network if the requested slice is not supported in the selected cell, wherein the radio base station comprises a receiving unit ( It is a wireless communication system including a UE connection control unit 130).
  • One aspect of the present disclosure is a step in which a terminal selects a cell in which a network supports or does not support slices divided into specific units; If not, a wireless communication method comprising: sending a report containing relevant information of said slice to a network; and said network receiving said report.
  • control unit 240 that executes a random access procedure specific to a slice in which the network is divided into specific units, and the random access procedure when the random access procedure fails.
  • a terminal UE 200 including a transmission section (slice-related information processing section 230) that transmits a report including information to the network.
  • One aspect of the present disclosure is a wireless communication system including a terminal and a wireless base station, wherein the terminal includes a control unit that executes a random access procedure specific to slices in which the network is divided into specific units; and a transmitting unit that transmits a report including information related to the random access procedure to the network when the random access procedure fails, and the radio base station includes a receiving unit (UE connection control unit 130) that receives the report. ).
  • the terminal includes a control unit that executes a random access procedure specific to slices in which the network is divided into specific units; and a transmitting unit that transmits a report including information related to the random access procedure to the network when the random access procedure fails
  • the radio base station includes a receiving unit (UE connection control unit 130) that receives the report. ).
  • One aspect of the present disclosure is a step in which a terminal performs a random access procedure specific to a slice in which a network is divided into specific units;
  • a wireless communication method comprising: sending a report containing information to said network; and receiving said report by said network.
  • FIG. 1 is an overall schematic configuration diagram of a radio communication system 10.
  • FIG. 2 is a functional block configuration diagram of the gNB100.
  • FIG. 3 is a functional block configuration diagram of UE200.
  • FIG. 4 is a diagram showing a configuration example of the ANR function unit 120.
  • FIG. 5 is a diagram illustrating a configuration example of a slice group.
  • FIG. 6 is a diagram illustrating an example of a Slice group ID reporting sequence according to Operation Example 1.
  • FIG. FIG. 7 is a diagram illustrating an example of signaling of slice-related information between nodes according to operation example 1;
  • FIG. 8 is a diagram illustrating an example of a communication sequence according to Operation Example 2;
  • FIG. 9 is a diagram illustrating an example of a communication sequence according to Operation Example 3;
  • FIG. 10 is a diagram showing a sequence example of slice remapping (Slice re-mapping decided by T-gNB (example 1)) according to operation example 4.
  • FIG. 11 is a diagram illustrating a sequence example of slice remapping (Slice re-mapping decided by T-gNB (example 2)) according to operation example 4.
  • FIG. FIG. 12 is a diagram illustrating a sequence example of slice remapping (Slice re-mapping decided by AMF and T-gNB) according to Operation Example 4.
  • FIG. 13 is a diagram illustrating a sequence example of slice remapping (Slice re-mapping decided by SN) according to Operation Example 4.
  • FIG. 14 is a diagram illustrating an example of a communication sequence according to Operation Example 5.
  • FIG. 15 is a diagram showing an example of the hardware configuration of gNB100 and UE200.
  • FIG. 16 is a diagram showing a configuration example of the vehicle 2001. As shown in FIG.
  • FIG. 1 is an overall schematic configuration diagram of a radio communication system 10 according to the present embodiment.
  • the radio communication system 10 is a radio communication system according to 5G New Radio (NR), and includes a Next Generation-Radio Access Network 20 (hereinafter NG-RAN 20 and terminals 200 (User Equipment 200, hereinafter UE 200).
  • NG-RAN 20 Next Generation-Radio Access Network 20
  • UE 200 User Equipment 200
  • the wireless communication system 10 may be a wireless communication system according to a system called Beyond 5G, 5G Evolution, or 6G.
  • NG-RAN 20 includes a radio base station 100 (hereinafter gNB 100).
  • gNB 100 radio base station 100
  • the specific configuration of the radio communication system 10 including the number of gNBs and UEs is not limited to the example shown in FIG.
  • the NG-RAN 20 actually includes multiple NG-RAN Nodes, specifically gNBs (or ng-eNBs), and is connected with a 5G-compliant core network 40 (which may be referred to as 5GC). .
  • Access and Mobility Management Function 50 (AMF50), which is included in the 5G system architecture and provides access and mobility management functions for UE 200, is connected to NG-RAN 20.
  • network elements other than the wireless communication system 10 for example, a private network (NPN: Non-Public Network), etc. may be connected to the core network 40 .
  • the NG-RAN 20 and core network 40 may provide multiple slices 45 that can be configured for each service such as a use case or business model.
  • a plurality of slices 45 may be grouped according to service content or the like.
  • the slice 45 may be configured (RAN Slicing) only by the NG-RAN 20 .
  • the slice 45 may be interpreted as a logical network in which the network is divided into specific units such as services.
  • slice 45-aware cell (re)selection and slice-specific random access channel (RACH) may be applied.
  • the gNB100 is an NR-compliant radio base station and performs NR-compliant radio communication with the UE200.
  • the gNB 100 may be composed of a CU (Central Unit) and a DU (Distributed Unit), and the DU may be separated from the CU and installed in a geographically different location.
  • CU Central Unit
  • DU Distributed Unit
  • gNB100 and UE200 control radio signals transmitted from multiple antenna elements to generate beams with higher directivity Massive MIMO, carrier aggregation (CA) that uses multiple component carriers (CC) in a bundle, And dual connectivity (DC) in which communication is performed simultaneously between the UE and multiple NG-RAN Nodes, etc., can be supported.
  • DC dual connectivity in which communication is performed simultaneously between the UE and multiple NG-RAN Nodes, etc.
  • NRT Neighbor Relation Table, NCRT (Neighbour Cell Relation Table), which is applied to handover (HO) of UE 200 to another cell and manages neighboring cell identification information (CGI: Cell Global Identifier), and may be called
  • CGI Cell Global Identifier
  • the NRT may be preconfigured manually, or an Automatic Neighbor Relation (ANR) function may be introduced to automatically associate neighbor cell information (CGI).
  • ANR Automatic Neighbor Relation
  • FIG. 2 is a functional block configuration diagram of gNB100.
  • FIG. 3 is a functional block configuration diagram of UE200. Note that FIGS. 2 and 3 only show main functional blocks related to the description of the embodiments, and that the gNB 100 and UE 200 have other functional blocks (eg, power supply units, etc.). . 2 and 3 show the functional block configurations of the gNB 100 and the UE 200, and please refer to FIG. 15 for the hardware configuration.
  • the gNB 100 includes a radio communication unit 110, an ANR function unit 120, a UE connection control unit 130 and a control unit 140.
  • the radio communication unit 110 transmits downlink signals (DL signals) according to NR.
  • Radio communication section 110 also receives an uplink signal (UL signal) according to NR.
  • the ANR function unit 120 provides functions related to ANR (Automatic Neighbor Relation). Specifically, the ANR function unit 120 can automatically associate information of neighboring cells.
  • FIG. 4 shows a configuration example of the ANR function unit 120.
  • the ANR function may consist of NCRT Management Function, Neighbor Removal Function and Neighbor Detection Function.
  • the Neighbor Cell Relation Table may consist of the NCR part (NCR, TCI (Transmission Configuration Indication)) and the O&M controlled attributes part (No Remove, No HO, No Xn).
  • NCR NCR
  • TCI Transmission Configuration Indication
  • O&M controlled attributes part No Remove, No HO, No Xn.
  • the ANR function unit 120 can receive neighboring cell information from the UE200.
  • the ANR function unit 120 may constitute a receiving unit that receives neighboring cell information.
  • the neighboring cell information may include information about the slice 45 (slice-related information).
  • the slice-related information may include identification information of the slice 45 or a group of slices 45 (Slice group ID).
  • the UE connection control unit 130 controls handover from the serving cell of the UE 200 to another neighboring cell (also called cell reselection, transition, etc.). Specifically, UE connection control section 130 can perform handover to a neighboring cell that satisfies handover conditions such as quality based on the NRT or ANR function.
  • the UE connection control unit 130 executes control related to the random access procedure (RA procedure) with the UE200.
  • RA procedure random access procedure
  • the UE connection control unit 130 can receive reports containing slice-related information.
  • the UE connection control unit 130 may configure a receiving unit that receives reports containing slice-related information.
  • the slice-related information included in the report includes information indicating that the slice 45 corresponding to the service requested by the UE 200 is not supported in the cell selected (or reselected) by the UE 200 (or the supported slice information) may be included.
  • the control unit 140 controls each functional block that configures the gNB100.
  • the control unit 140 can manage (generate, update, etc.) the Neighbor Cell Association (NCR) of the UE 200 and control the slices 45 that the UE 200 uses.
  • NCR Neighbor Cell Association
  • control unit 140 can manage the NCR considering the types of slices 45 supported by the cell, based on the slice-related information that the ANR function unit 120 receives from the UE 200.
  • control unit 140 may control handover to a cell that supports the slice 45 requested by the UE 200 based on the slice-related information that the UE connection control unit 130 has received from the UE 200.
  • the control unit 140 may exchange slice information supported by the gNB 100 with other radio base stations (gNBs). Specifically, the control unit 140 may share the slice-related information with nodes such as other radio base stations configuring the NG-RAN 20 . A specific example of sharing slice-related information will be described later.
  • Control channels may be PDCCH (Physical Downlink Control Channel), PUCCH (Physical Uplink Control Channel), RACH (Random Access Channel, Downlink Control Information (DCI) including Random Access Radio Network Temporary Identifier (RA-RNTI)), and Physical Broadcast Channel (PBCH) may be included.
  • PDCCH Physical Downlink Control Channel
  • PUCCH Physical Uplink Control Channel
  • RACH Random Access Channel
  • DCI Downlink Control Information
  • RA-RNTI Random Access Radio Network Temporary Identifier
  • PBCH Physical Broadcast Channel
  • Data channels include PDSCH (Physical Downlink Shared Channel) and PUSCH (Physical Uplink Shared Channel). Data may refer to data transmitted over a data channel.
  • PDSCH Physical Downlink Shared Channel
  • PUSCH Physical Uplink Shared Channel
  • layer 1 may be interpreted as including lower layers such as the physical layer.
  • Layer 3 is a higher layer than layer 1 .
  • the higher layers may include a radio link control layer (RLC), a packet data convergence protocol layer (PDCP), a radio resource control layer (RRC) and/or a medium access control layer (MAC ) may be positioned between the lower layer and the upper layer.
  • RLC radio link control layer
  • PDCP packet data convergence protocol layer
  • RRC radio resource control layer
  • MAC medium access control layer
  • the UE 200 includes a radio communication unit 210, a connection execution unit 220, a slice related information processing unit 230 and a control unit 240.
  • the radio communication unit 210 transmits an uplink signal (UL signal) according to NR. Also, the radio communication unit 210 receives an uplink signal (DL signal) according to NR.
  • UL signal uplink signal
  • DL signal uplink signal
  • connection execution unit 220 executes RA procedures with the network (gNB 100).
  • the connection execution unit 220 also executes handover from the serving cell to another neighboring cell.
  • the connection performing unit 220 can perform handover to a neighboring cell that satisfies handover conditions such as quality based on the NRT or ANR function.
  • the slice-related information processing unit 230 processes information (slice-related information) related to the slice 45 .
  • the slice-related information processing unit 230 can transmit neighboring cell information including information on the slice 45 to the network.
  • the slice-related information processing section 230 may configure a transmitting section that transmits neighboring cell information including information on the slice 45 .
  • the slice-related information processing unit 230 may transmit neighboring cell information including identification information of a slice (NSSAI: Network Slice Selection Assistance Information) or a group of slices (Slice group ID).
  • NSSAI Network Slice Selection Assistance Information
  • lice group ID a group of slices
  • the slice-related information processing unit 230 may transmit a report including information related to the slice (slice-related information) to the network. good.
  • the slice-related information processing section 230 may configure a transmitting section that transmits a report including slice-related information.
  • the slice-related information may simply indicate that the requested slice 45 is not supported, or may indicate the identification information (or Slice group ID) of the supported slice 45.
  • Slice-related information may be included in a report such as a measurement report (eg, logged MDT (Minimization of Drive Test) measurement report, Immediate MDT measurement report, or measurement report).
  • a measurement report eg, logged MDT (Minimization of Drive Test) measurement report, Immediate MDT measurement report, or measurement report.
  • other reports such as Failure report (for example, RLF report, connEstFailReport, or RACH report) are also acceptable.
  • the slice-related information is, for example, a plurality of slices 45 associated with priority. It may be configured by identification information (or Slice group ID) or the like.
  • the slice-related information processing unit 230 sends a specific measurement report (eg, logged MDT) including slice-related information to the network when a connection with the cell or another cell is established. may be sent.
  • a specific measurement report eg, logged MDT
  • the slice 45 requested in the selected cell may be determined based on the slice priority in the UE 200.
  • the slice-related information processing unit 230 may send a report including information related to the RA procedure to the network.
  • the slice-related information processing section 230 may constitute a transmission section that transmits a report including RA procedure-related information (RA procedure-related information).
  • the RA procedure-related information may include radio resources used for executing the RA procedure.
  • the radio resource may include a 2-step slice specific RACH resource or a 4-step slice specific RACH resource.
  • the RACH resource may be interpreted as a radio resource specific to a particular slice 45 (ie not used in other slices 45).
  • the RA procedure-related information indicates that the RA procedure specific to the slice 45 (slice specific RACH) has fallen back to the normal RA procedure, and/or that the RA procedure specific to the slice 45 and the RA procedure of a specific service are different. May include collision.
  • Specific services include, for example, MPS (Multimedia Priority Service) or MCS (Mission critical service).
  • the control unit 240 controls each functional block that configures the UE200.
  • the control unit 240 controls the association of neighboring cells formed in the neighborhood of the serving cell of the UE 200 .
  • the control unit 240 can execute an RA procedure (slice specific RACH) specific to the slice 45.
  • a slice specific RACH may include a 2-step RACH and a 4-step RACH as well as a normal RACH.
  • messages In the 2-step RACH, messages (MSG) A and B (Random Access Preamble, Contention Resolution/Random Access Response (RAR)) may be transmitted and received.
  • MSG1-4 Random Access Preamble, Random Access Response, Scheduled Transmission, Contention Resolution
  • MSG1-4 Random Access Preamble, Random Access Response, Scheduled Transmission, Contention Resolution
  • the control unit 240 can select cells that support or do not support the slice 45. That is, the control unit 240 may select a cell that supports the type of slice 45 requested by the UE 200, or may select a cell that does not support the type of slice 45 requested by the UE 200. good. If the UE 200 selects a cell that does not support the type of slice 45 requested, slice related information may be transmitted, as described above.
  • control unit 240 may transmit the slice-related information of the slice 45 to be accessed to the network.
  • the slice-related information may be included in ConnEstFailureReport, for example.
  • NSSAI Network-Specific Function
  • SIB System Information Block
  • FIG. 5 shows a configuration example of a slice group. As shown in FIG. 5, a slice group may consist of multiple NSSAIs.
  • slice specific RACH In the contention based RACH, the slice specific RACH reserves separate RACH resources for high priority slices and avoids collisions with low priority or legacy RACHs other than slice specific RACH.
  • RACH resource isolation For slice specific RACH, it is desirable to secure RACH resources in high-priority slices in order to connect to the network more quickly in URLLC (Ultra-Reliable and Low Latency Communications) services at factories. Specifically, some resources in Contention based RACH resources are reserved for high priority slices. May also be called RACH resource isolation.
  • ⁇ Configure RACH resource pool for each slice (or slice group) and notify UE200 ⁇ Set RACH parameter to UE200 for each slice (or slice group) can be set.
  • Operation example 1 The existing ANR function has a problem that the UE 200 cannot report information on slices supported by cells.
  • the UE 200 may include Slice group ID information in a specific information element (for example, CGIInfoNR) of the RRC layer.
  • FIG. 6 shows an example of a Slice group ID reporting sequence according to Operation Example 1.
  • UE 200 can connect to cell A and report neighbor cell information.
  • UE 200 receives SIB from cell B via BCCH (Broadcast Control Channel).
  • BCCH Broadcast Control Channel
  • Cell B may support RAN Slicing.
  • the UE 200 may include a slice group ID when reporting neighbor cell information of cell B to cell A (serving cell).
  • the Slice group ID By incorporating the Slice group ID into the NRT, it is possible to discover and select an appropriate transition destination cell in order to support the slice 45 used in the handover source cell (source cell).
  • information on slices supported by the cell may be signaled between nodes that configure the network.
  • FIG. 7 shows an example of signaling of slice-related information between nodes according to operation example 1.
  • FIG. 7 under the same AMF 50, between gNB1 and gNB2 that do not have Xn links, information on slices to be supported may be signaled.
  • the messages used for signaling are only examples, and other messages may be used as long as they are messages that are transmitted and received between the nodes.
  • FIG. 8 shows an example of a communication sequence according to Operation Example 2. As shown in FIG. 8, UE 200 may record that the slice to be accessed with logged MDT is not supported by the cell.
  • the cell ID, unsupported slice information, and slice group ID supported by the cell are reported to the network by logged MDT measurement report. good. These pieces of information may be collectively called slice-related information.
  • the slice to be accessed may be the slice (or a list of slices) with the highest slice priority notified from the UE NAS (Non-Access Stratum) to the AS (Access Stratum).
  • the slice (or list of slices) with the highest slice priority stored (held) by UE 200 may be stored ( It can also be a list of slices that hold
  • Slice based cell reselection may be executed, for example, according to the following procedure.
  • ⁇ Step 0 NAS layer at UE provides slice information to AS layer at UE, including slice priorities.
  • ⁇ Step 1 AS sorts slices in priority order starting with highest priority slice.
  • ⁇ Step 2 Select slices in priority order starting with the highest priority slice.
  • ⁇ Step 3 For the selected slice assign priority to frequencies received from network.
  • ⁇ Step 4 Starting with the highest priority frequency, perform measurements (same as legacy).
  • ⁇ Step 5 If the highest ranked cell is suitable (as defined in 38.304) and supports the selected slice in step 2 then camp on the cell and exit this sequence of operation.
  • ⁇ Step 6 If there are remaining frequencies then go back to step 4.
  • ⁇ Step 7 FFS: If the end of the slice list has not been reached go back to step 2.
  • ⁇ Step 8 Perform legacy cell reselection.
  • FIG. 9 shows an example of a communication sequence according to Operation Example 3.
  • the UE 200 may include information (NSSAI) of the slice to be accessed in the ConnEstFailureReport.
  • NSSAI information of the slice to be accessed in the ConnEstFailureReport.
  • ConnEstFailureReport is just an example, and other reports (may be dedicated reports or may be included in other reports such as radio link failure (RLF)) as long as information on the relevant slice can be reported.
  • RLF radio link failure
  • the occurrence of a connection establishment failure when the UE 200 attempts to access a high-priority slice is an important event for the operator of the wireless communication system 10, so it can be useful information for improving the quality of the area including the cell.
  • Slice remapping means that during handover of UE 200 the slice that the source cell (source node) was mapping is mapped to another slice due to reasons such as not being supported by the target cell (target node). you can
  • the reason for slice remapping failure may be communicated to the source node using a specific message.
  • FIG. 10 shows a sequence example of slice remapping (Slice re-mapping decided by T-gNB (example 1)) according to operation example 4.
  • FIG. 11 shows a sequence example of slice remapping (Slice re-mapping decided by T-gNB (example 2)) according to operation example 4.
  • FIG. 12 shows a sequence example of slice remapping (Slice re-mapping decided by AMF and T-gNB) according to Operation Example 4.
  • FIG. 13 shows an example of a slice remapping sequence (Slice re-mapping decided by SN) according to Operation Example 4.
  • the target node cannot support some or all of the slices (or the list of slices) of the PDU session resource to be setup list contained in the HO request msg. sent from the source node, and the target node (T- gNB) decides slice remapping, the following information may be notified to the source node.
  • ⁇ In the case of NG handover when some or all of the slices of the PDU Session Resource List included in the handover required msg. cannot be supported from the source node to AMF, and AMF or target node decides slice remapping, the following information may be notified to the source node.
  • node may be notified.
  • notification contents described above may be included in the messages for the source node (S-gNB) shown in FIGS. shown).
  • FIG. 14 shows an example of a communication sequence according to Operation Example 5.
  • FIG. 14 if slice-specific RACH fails, the RACH report may report RA procedure-related information including at least any of the following.
  • ⁇ Slice ID (NSSAI) or Slice group ID that UE200 tries to access Information on slice groups supported by the cell may be included in the RACH report.
  • the target cell cannot support the slice used in the source cell at the time of handover of the UE 200, and information indicating whether or not the slice can be remapped is notified to the source node, thereby ensuring service continuity due to handover. information to help maintain
  • a slice is a logical (virtual) network divided by service units such as use cases or business models, Such a network may be called by another name.
  • configure, activate, update, indicate, enable, specify, and select may be read interchangeably. good.
  • link, associate, correspond, and map may be read interchangeably to allocate, assign, monitor. , map, may also be read interchangeably.
  • precoding "precoding weight”
  • QCL quadsi-co-location
  • TCI state Transmission Configuration Indication state
  • spatialal patial relation
  • spatialal domain filter "transmission power”
  • phase rotation "antenna port
  • antenna port group "layer”
  • number of layers Terms such as “rank”, “resource”, “resource set”, “resource group”, “beam”, “beam width”, “beam angle”, “antenna”, “antenna element”, “panel” are interchangeable. can be used as intended.
  • each functional block may be implemented using one device physically or logically coupled, or directly or indirectly using two or more physically or logically separate devices (e.g. , wired, wireless, etc.) and may be implemented using these multiple devices.
  • a functional block may be implemented by combining software in the one device or the plurality of devices.
  • Functions include judging, determining, determining, calculating, calculating, processing, deriving, investigating, searching, checking, receiving, transmitting, outputting, accessing, resolving, selecting, choosing, establishing, comparing, assuming, expecting, assuming, Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc. can't
  • a functional block (component) that performs transmission is called a transmitting unit or transmitter.
  • the implementation method is not particularly limited.
  • FIG. 15 is a diagram showing an example of the hardware configuration of the device.
  • the device may be configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.
  • the term "apparatus” can be read as a circuit, device, unit, or the like.
  • the hardware configuration of the device may be configured to include one or more of each device shown in the figure, or may be configured without some of the devices.
  • Each functional block of the device (see Fig. 2.3) is realized by any hardware element of the computer device or a combination of the hardware elements.
  • each function of the device is implemented by causing the processor 1001 to perform calculations, controlling communication by the communication device 1004, and controlling the It is realized by controlling at least one of data reading and writing in 1002 and storage 1003 .
  • a processor 1001 operates an operating system and controls the entire computer.
  • the processor 1001 may be configured with a central processing unit (CPU) including interfaces with peripheral devices, a controller, arithmetic units, registers, and the like.
  • CPU central processing unit
  • the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and executes various processes according to them.
  • programs program codes
  • software modules software modules
  • data etc.
  • the various processes described above may be executed by one processor 1001, or may be executed by two or more processors 1001 simultaneously or sequentially.
  • Processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via an electric communication line.
  • the memory 1002 is a computer-readable recording medium, and is composed of at least one of Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), Random Access Memory (RAM), etc. may be
  • ROM Read Only Memory
  • EPROM Erasable Programmable ROM
  • EEPROM Electrically Erasable Programmable ROM
  • RAM Random Access Memory
  • the memory 1002 may also be called a register, cache, main memory (main storage device), or the like.
  • the memory 1002 can store programs (program code), software modules, etc. capable of executing a method according to an embodiment of the present disclosure.
  • the storage 1003 is a computer-readable recording medium, for example, an optical disc such as a Compact Disc ROM (CD-ROM), a hard disk drive, a flexible disc, a magneto-optical disc (for example, a compact disc, a digital versatile disc, a Blu-ray disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, and/or the like.
  • Storage 1003 may also be referred to as an auxiliary storage device.
  • the recording medium described above may be, for example, a database, server, or other suitable medium including at least one of memory 1002 and storage 1003 .
  • the communication device 1004 is hardware (transmitting/receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, or the like.
  • the communication device 1004 includes a high-frequency switch, duplexer, filter, frequency synthesizer, etc., for realizing at least one of frequency division duplex (FDD) and time division duplex (TDD).
  • FDD frequency division duplex
  • TDD time division duplex
  • the input device 1005 is an input device (for example, keyboard, mouse, microphone, switch, button, sensor, etc.) that receives input from the outside.
  • the output device 1006 is an output device (eg, display, speaker, LED lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated (for example, a touch panel).
  • each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured using a single bus, or may be configured using different buses between devices.
  • the device includes hardware such as a microprocessor, digital signal processor (DSP), application specific integrated circuit (ASIC), programmable logic device (PLD), field programmable gate array (FPGA), etc.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • PLD programmable logic device
  • FPGA field programmable gate array
  • notification of information is not limited to the aspects/embodiments described in the present disclosure, and may be performed using other methods.
  • the notification of information may include physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI), higher layer signaling (e.g., RRC signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB), other signals, or combinations thereof, and RRC signaling may also be referred to as RRC messages, e.g., RRC Connection Setup ) message, RRC Connection Reconfiguration message, or the like.
  • DCI Downlink Control Information
  • UCI Uplink Control Information
  • RRC signaling e.g., RRC signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB), other signals, or combinations thereof
  • RRC signaling may also be referred to as RRC messages, e.g., RRC Connection Setup ) message, R
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • SUPER 3G IMT-Advanced
  • 4G 4th generation mobile communication system
  • 5G 5th generation mobile communication system
  • Future Radio Access FAA
  • New Radio NR
  • W-CDMA registered trademark
  • GSM registered trademark
  • CDMA2000 Code Division Multiple Access 2000
  • UMB Ultra Mobile Broadband
  • IEEE 802.11 Wi-Fi (registered trademark)
  • IEEE 802.16 WiMAX®
  • IEEE 802.20 Ultra-WideBand (UWB), Bluetooth®, other suitable systems, and/or next-generation systems enhanced therefrom.
  • a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G).
  • a specific operation that is performed by a base station in the present disclosure may be performed by its upper node in some cases.
  • various operations performed for communication with a terminal may be performed by the base station and other network nodes other than the base station (e.g. MME or S-GW, etc., but not limited to).
  • MME or S-GW network nodes
  • the case where there is one network node other than the base station is exemplified above, it may be a combination of a plurality of other network nodes (for example, MME and S-GW).
  • Information, signals can be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). It may be input and output via multiple network nodes.
  • Input/output information may be stored in a specific location (for example, memory) or managed using a management table. Input and output information may be overwritten, updated, or appended. The output information may be deleted. The entered information may be transmitted to other devices.
  • the determination may be made by a value represented by one bit (0 or 1), by a true/false value (Boolean: true or false), or by numerical comparison (for example, a predetermined value).
  • notification of predetermined information is not limited to being performed explicitly, but may be performed implicitly (for example, not notifying the predetermined information). good too.
  • Software whether referred to as software, firmware, middleware, microcode, hardware description language or otherwise, includes instructions, instruction sets, code, code segments, program code, programs, subprograms, and software modules. , applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, and the like.
  • software, instructions, information, etc. may be transmitted and received via a transmission medium.
  • the Software uses wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) to access websites, Wired and/or wireless technologies are included within the definition of transmission medium when sent from a server or other remote source.
  • wired technology coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.
  • wireless technology infrared, microwave, etc.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. may be represented by a combination of
  • the channel and/or symbols may be signaling.
  • a signal may also be a message.
  • a component carrier may also be called a carrier frequency, a cell, a frequency carrier, or the like.
  • system and “network” used in this disclosure are used interchangeably.
  • information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values from a predetermined value, or may be expressed using other corresponding information.
  • radio resources may be indexed.
  • base station BS
  • radio base station fixed station
  • NodeB NodeB
  • eNodeB eNodeB
  • gNodeB gNodeB
  • a base station may also be referred to by terms such as macrocell, small cell, femtocell, picocell, and the like.
  • a base station can accommodate one or more (eg, three) cells (also called sectors). When a base station accommodates multiple cells, the overall coverage area of the base station can be partitioned into multiple smaller areas, each smaller area corresponding to a base station subsystem (e.g., a small indoor base station (Remote Radio)). Head: RRH) can also provide communication services.
  • a base station subsystem e.g., a small indoor base station (Remote Radio)
  • Head: RRH can also provide communication services.
  • cell refers to part or all of the coverage area of at least one of a base station and base station subsystem that provides communication services in this coverage.
  • MS Mobile Station
  • UE User Equipment
  • a mobile station is defined by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless It may also be called a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
  • At least one of the base station and mobile station may be called a transmitting device, a receiving device, a communication device, or the like.
  • At least one of the base station and the mobile station may be a device mounted on a mobile object, the mobile object itself, or the like.
  • the mobile body may be a vehicle (e.g., car, airplane, etc.), an unmanned mobile body (e.g., drone, self-driving car, etc.), or a robot (manned or unmanned ).
  • at least one of the base station and the mobile station includes devices that do not necessarily move during communication operations.
  • at least one of the base station and mobile station may be an Internet of Things (IoT) device such as a sensor.
  • IoT Internet of Things
  • the base station in the present disclosure may be read as a mobile station (user terminal, hereinafter the same).
  • communication between a base station and a mobile station is replaced with communication between multiple mobile stations (for example, Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.)
  • the mobile station may have the functions that the base station has.
  • words such as "up” and “down” may be replaced with words corresponding to inter-terminal communication (for example, "side”).
  • uplink channels, downlink channels, etc. may be read as side channels.
  • a radio frame may consist of one or more frames in the time domain. Each frame or frames in the time domain may be referred to as a subframe. A subframe may also consist of one or more slots in the time domain. A subframe may be a fixed time length (eg, 1 ms) independent of numerology.
  • a numerology may be a communication parameter that applies to the transmission and/or reception of a signal or channel. Numerology, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, transmission and reception specific filtering operations performed by the receiver in the frequency domain, specific windowing operations performed by the transceiver in the time domain, and/or the like.
  • SCS subcarrier spacing
  • TTI transmission time interval
  • number of symbols per TTI radio frame structure
  • transmission and reception specific filtering operations performed by the receiver in the frequency domain specific windowing operations performed by the transceiver in the time domain, and/or the like.
  • a slot may consist of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain.
  • OFDM Orthogonal Frequency Division Multiplexing
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • a slot may be a unit of time based on numerology.
  • a slot may contain multiple mini-slots. Each minislot may consist of one or more symbols in the time domain. A minislot may also be referred to as a subslot. A minislot may consist of fewer symbols than a slot.
  • a PDSCH (or PUSCH) that is transmitted in time units larger than a minislot may be referred to as PDSCH (or PUSCH) mapping type A.
  • PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (or PUSCH) mapping type B.
  • Radio frames, subframes, slots, minislots and symbols all represent time units when transmitting signals. Radio frames, subframes, slots, minislots and symbols may be referred to by other corresponding designations.
  • one subframe may be called a transmission time interval (TTI)
  • TTI transmission time interval
  • multiple consecutive subframes may be called a TTI
  • one slot or one minislot may be called a TTI. That is, at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, may be a period shorter than 1ms (eg, 1-13 symbols), or a period longer than 1ms may be Note that the unit representing the TTI may be called a slot, minislot, or the like instead of a subframe.
  • TTI refers to, for example, the minimum scheduling time unit in wireless communication.
  • a base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each user terminal) to each user terminal on a TTI basis.
  • radio resources frequency bandwidth, transmission power, etc. that can be used by each user terminal
  • the TTI may be a transmission time unit for channel-encoded data packets (transport blocks), code blocks, codewords, etc., or may be a processing unit for scheduling, link adaptation, etc. Note that when a TTI is given, the time interval (for example, the number of symbols) in which transport blocks, code blocks, codewords, etc. are actually mapped may be shorter than the TTI.
  • one slot or one minislot is called a TTI
  • one or more TTIs may be the minimum scheduling time unit.
  • the number of slots (the number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
  • a TTI with a time length of 1 ms may be called a normal TTI (TTI in LTE Rel.8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc.
  • TTI that is shorter than a regular TTI may also be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a minislot, a subslot, a slot, and so on.
  • long TTI for example, normal TTI, subframe, etc.
  • short TTI for example, shortened TTI, etc.
  • a TTI having a TTI length greater than or equal to this value may be read as a replacement.
  • a resource block is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers in the frequency domain.
  • the number of subcarriers included in an RB may be the same regardless of neurology, and may be 12, for example.
  • the number of subcarriers included in an RB may be determined based on neumerology.
  • the time domain of an RB may include one or more symbols and may be 1 slot, 1 minislot, 1 subframe, or 1 TTI long.
  • One TTI, one subframe, etc. may each consist of one or more resource blocks.
  • One or more RBs are physical resource blocks (Physical RB: PRB), sub-carrier groups (SCG), resource element groups (REG), PRB pairs, RB pairs, etc. may be called.
  • PRB Physical resource blocks
  • SCG sub-carrier groups
  • REG resource element groups
  • PRB pairs RB pairs, etc.
  • a resource block may be composed of one or more resource elements (Resource Element: RE).
  • RE resource elements
  • 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.
  • a Bandwidth Part (which may also be called a Bandwidth Part) represents a subset of contiguous common resource blocks (RBs) for a neumerology in a carrier. good.
  • the common RB may be identified by an RB index based on the common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • BWP may include BWP for UL (UL BWP) and BWP for DL (DL BWP).
  • BWP may include BWP for UL (UL BWP) and BWP for DL (DL BWP).
  • One or more BWPs may be configured in one carrier for a UE.
  • At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal/channel outside the active BWP.
  • BWP bitmap
  • radio frames, subframes, slots, minislots and symbols described above are only examples.
  • the number of subframes included in a radio frame the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of Configurations such as the number of subcarriers and the number of symbols in a TTI, symbol length, cyclic prefix (CP) length, etc.
  • CP cyclic prefix
  • connection means any direct or indirect connection or coupling between two or more elements, It can include the presence of one or more intermediate elements between two elements being “connected” or “coupled.” Couplings or connections between elements may be physical, logical, or a combination thereof. For example, “connection” may be read as "access”.
  • two elements are defined using at least one of one or more wires, cables and printed electrical connections and, as some non-limiting and non-exhaustive examples, in the radio frequency domain. , electromagnetic energy having wavelengths in the microwave and light (both visible and invisible) regions, and the like.
  • the reference signal can also be abbreviated as Reference Signal (RS), and may also be called Pilot depending on the applicable standard.
  • RS Reference Signal
  • any reference to elements using the "first,” “second,” etc. designations used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, references to first and second elements do not imply that only two elements may be employed therein or that the first element must precede the second element in any way.
  • determining and “determining” used in this disclosure may encompass a wide variety of actions.
  • “Judgement” and “determination” are, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (eg, lookup in a table, database, or other data structure), ascertaining as “judged” or “determined”, and the like.
  • "judgment” and “determination” are used for receiving (e.g., receiving information), transmitting (e.g., transmitting information), input, output, access (accessing) (for example, accessing data in memory) may include deeming that a "judgment” or “decision” has been made.
  • judgment and “decision” are considered to be “judgment” and “decision” by resolving, selecting, choosing, establishing, comparing, etc. can contain.
  • judgment and “decision” may include considering that some action is “judgment” and “decision”.
  • judgment (decision) may be read as “assuming”, “expecting”, “considering”, or the like.
  • a and B are different may mean “A and B are different from each other.”
  • the term may also mean that "A and B are different from C”.
  • Terms such as “separate,” “coupled,” etc. may also be interpreted in the same manner as “different.”
  • FIG. 16 shows a configuration example of a vehicle 2001.
  • a vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, axles 2009, an electronic control unit 2010, It has various sensors 2021 to 2029, an information service unit 2012 and a communication module 2013.
  • the driving unit 2002 is composed of, for example, an engine, a motor, or a hybrid of the engine and the motor.
  • the steering unit 2003 includes at least a steering wheel (also referred to as a steering wheel), and is configured to steer at least one of the front wheels and rear wheels based on the operation of the steering wheel operated by the user.
  • a steering wheel also referred to as a steering wheel
  • the electronic control unit 2010 is composed of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals from various sensors 2021 to 2027 provided in the vehicle are input to the electronic control unit 2010 .
  • the electronic control unit 2010 may be called an ECU (Electronic Control Unit).
  • the signals from various sensors 2021 to 2028 include the current signal from the current sensor 2021 that senses the current of the motor, the rotation speed signal of the front and rear wheels obtained by the rotation speed sensor 2022, and the front wheel obtained by the air pressure sensor 2023. and rear wheel air pressure signal, vehicle speed signal obtained by vehicle speed sensor 2024, acceleration signal obtained by acceleration sensor 2025, accelerator pedal depression amount signal obtained by accelerator pedal sensor 2029, brake pedal sensor 2026 obtained by There are a brake pedal depression amount signal, a shift lever operation signal acquired by the shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028, and the like.
  • the information service unit 2012 includes various devices such as car navigation systems, audio systems, speakers, televisions, and radios for providing various information such as driving information, traffic information, and entertainment information, and one or more devices for controlling these devices. It consists of an ECU and The information service unit 2012 uses information acquired from an external device via the communication module 2013 and the like to provide passengers of the vehicle 1 with various multimedia information and multimedia services.
  • Driving support system unit 2030 includes millimeter wave radar, LiDAR (Light Detection and Ranging), camera, positioning locator (e.g. GNSS), map information (e.g. high-definition (HD) map, autonomous vehicle (AV) map, etc. ), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors to prevent accidents and reduce the driver's driving load. and one or more ECUs that control these devices.
  • the driving support system unit 2030 transmits and receives various information via the communication module 2013, and realizes a driving support function or an automatic driving function.
  • the communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 1 via communication ports.
  • the communication module 2013 communicates with the vehicle 2001 through a communication port 2033 a driving unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, Data is sent and received between axle 2009, microprocessor 2031 and memory (ROM, RAM) 2032 in electronic control unit 2010, and sensors 2021-2028.
  • the communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with an external device. For example, it transmits and receives various information to and from an external device via wireless communication.
  • Communication module 2013 may be internal or external to electronic control 2010 .
  • the external device may be, for example, a base station, a mobile station, or the like.
  • the communication module 2013 transmits the current signal from the current sensor input to the electronic control unit 2010 to the external device via wireless communication.
  • the communication module 2013 receives, from the electronic control unit 2010, the rotation speed signals of the front and rear wheels obtained by the rotation speed sensor 2022, the air pressure signals of the front and rear wheels obtained by the air pressure sensor 2023, and the vehicle speed sensor. 2024, the acceleration signal obtained by the acceleration sensor 2025, the accelerator pedal depression amount signal obtained by the accelerator pedal sensor 2029, the brake pedal depression amount signal obtained by the brake pedal sensor 2026, and the shift lever.
  • a shift lever operation signal obtained by the sensor 2027 and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by the object detection sensor 2028 are also transmitted to an external device via wireless communication.
  • the communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from external devices and displays it on the information service unit 2012 provided in the vehicle. Communication module 2013 also stores various information received from external devices in memory 2032 available to microprocessor 2031 . Based on the information stored in the memory 2032, the microprocessor 2031 controls the driving unit 2002, the steering unit 2003, the accelerator pedal 2004, the brake pedal 2005, the shift lever 2006, the left and right front wheels 2007, and the left and right rear wheels provided in the vehicle 2001. 2008, axle 2009, sensors 2021-2028, etc. may be controlled.
  • various information traffic information, signal information, inter-vehicle information, etc.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Le présent terminal exécute une procédure d'accès aléatoire spécifique à une tranche obtenue en divisant un réseau en unités particulières, et transmet, au réseau, un rapport comprenant des informations relatives à la procédure d'accès aléatoire lorsque la procédure d'accès aléatoire échoue.
PCT/JP2021/034908 2021-09-22 2021-09-22 Terminal, système de communication sans fil et procédé de communication sans fil WO2023047504A1 (fr)

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